Why it's disruptive: Right now, most of the things you can print on MakerBot look like plastic toys. And that's pretty cool -- instead of having to buy your kids figurines, you'll be able to print them out instead.

But MakerBot's technology has even bigger potential. Imagine your door knob breaking, and needing a new one. Instead of going to the store you can print one at home instead. That's where MakerBot is headed.

Kickstarter is changing the retail and finance industries. It lets anyone invest in anything, and it encourages pre-orders.

Why it's disruptive: Kickstarter is changing the way businesses are financed and launched. Before Kickstarter, entrepreneurs had to bootstrap or seek funding before testing the idea in the community. It cost a lot of money and was a very risky process.

Why it's disruptive: It's a pain to bring chargers everywhere you lug a computer or phone. It's also a pain that one charger doesn't work for everything. A solution like PowerMat is cool, but the devices still have to be touching the pad.

uBeam is working on a solution that can charge multiple devices from a single, wireless source. The current prototype only works with products that are in close proximity, but Perry wants to make a product that can be put on the ceiling of a room and charge every device in it.

Why it's disruptive: A lot of startups are working on mobile payments around credit cards. But Dwolla is trying to create a new payment method that's credit card (and credit card fee) free.

Dwolla links directly to users' bank accounts and only transfers as much money as you have in there, so users can't go into debt. It only charges 25 cents per transaction over $10; anything smaller, like a coffee at a store that accepts Dwolla, is free for the vendor.

Imagine never having to deal with minimum payment amounts at small restaurants again. And, if you're a small business, imagine not losing a big chunk of change to Visa or MasterCard. That's what Dwolla's working to solve.

Why it's disruptive: Napster and iTunes revolutionized music, and Spotify is another major breakthrough. Instead of paying for songs and keeping them forever, like on iTunes, you can stream millions of songs for free on Spotify.

Spotify pays record labels every time one of their songs is played. If you don't want to listen to ads or you want to listen to Spotify via its mobile app, you can pay $10 per month.

It's a better alternative than Pandora if you want to pick what you're listening to and create your own playlists. If you're looking to discover new songs you'll have to wait a little longer. But for people who are tired of paying for songs only to get sick of them a month later, Spotify makes a lot of sense.

Twitter is disrupting the way we share and read news. It's the fastest way to send a message to the masses.

Why it's disruptive: Everyone is predicting that our phones will become our wallets. In the meantime, there's Square.

Square is working on a new-age cash register, one that operates via mobile devices like iPads and iPhones. Square is creating a ton of relationships with small businesses and helping them get up to speed with technology while collecting a ton of local data in the process.

Lytro has created the first ever shoot now, focus later camera. The technology is so amazing, Steve Jobs wanted to implement it in the next iPhone.

Concept: A camera that lets the photographer shoot now and focus later. Once the pictures are uploaded, the photographer can merely click on a section of the photo they'd like to bring to focus, and Lytro's technology makes it happen. It's the first-ever light field camera.

Founder: Ren Ng

Location: Mountain View, CA

Funding: $50 million from NEA, Andreessen Horowitz and Greylock Partners

Why it's disruptive: Lytro's technology makes one photo look like many. It changes the perspective seamlessly, and the technology is so impressive, Steve Jobs asked Ng to discuss how Apple could implement the technology in its next iPhone.

2tor is helping colleges get all of their classes and curriculums online so people can get degrees without physically being on campus

Concept: Bringing college degrees online so anyone can get a degree from a physical university without actually being on campus. The quality is so high, universities are able to charge the same tuition for online degrees that they charge students on campus.

Why it's disruptive: 2Tor is helping universities, which are struggling to stay relevant as startups are working to commoditize education, get online and reach more students. Now, instead of only being able to offer a certain amount of spots for students, they can offer online degrees for the same cost to many more people.

For students, it enables them to apply to top schools like Harvard from anywhere and earn a degree from home. It's an especially good solution for international students.

Airbnb is reinventing the hospitality industry; now you can rent a room from a person instead of a hotel.

Concept: Rent a room from a person rather than a hotel. It turns anyone with an open room into a bed and breakfast so they can make extra cash on the side, and room rates are usually cheaper than hotels.

Honorable Mentions:

It's ridiculous that people are still giving networks like Amazon or iTunes a cut of their sales. Why does Lady Gaga, for example, still give iTunes 30% of the profit, when she could be selling directly to her millions of Twitter followers and keeping a bigger chunk of change? Gumroad provides a unique url for products that can be distributed and shared on social networks to make direct sales possible.

Stripe - Stripe makes it incredibly easy for anyone to collect payments on their website without having to use PayPal. It's just a few lines of code that can be embedded on any site and voila, you can accept transactions. Stripe undercuts PayPal's cost too, charging 2.9% per transaction plus 30 cents.

Brewster- Brewster just launched today, but it's been on founder Steve Greenwood's mind for seven years. It turns mobile contact lists into social networks that update information in real time. It's terrible trying to keep track of friends who change emails or phone numbers. Brewster keeps all of that information up to date for you.

Uber - Find a nearby car using Uber's mobile app when you need a ride. Uber uses the GPS on your phone to find you and sends a car to pick you up in minutes. No cash is exchanged. The trip plus tip is charged to the credit card Uber has on file.

If you've ever traveled to a place like San Francisco, you know how painful it can be to hail a cab. It doesn't show up on time, or it doesn't show up at all. As Uber expands into more types of transportation and vehicles become more cost-effective, it could change the way we find rides for good.